That looks interesting...

You may want to look at some anatomy reference. The proportions a tad bit off. You should really try and nail the forms and proportions at a low division level, and slowly move up the resolution, and add detail as you go. At the moment it looks like you imported the mesh divided it 6 times and sculpted the fine details.

Another thing that you should try, is using the move tool at a low division level to move around the points, and block in the forms.

anyway, looking forward to seeing how you progress.